方法一:

function getParam(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); 
    var r = window.location.search.substr(1).match(reg);  
    if (r != null) return unescape(r[2]); return null; 
}

//例如网址是 https://www.baidu.com?name="blue"
console.log(getParam("name"));　　//blue

方法二：

function getParam(){
  var url = location.search;
  var theRequest = new Object();   
  if (url.indexOf("?") != -1) {   
      var str = url.substr(1);   
      strs = str.split("&");   
      for(var i = 0; i < strs.length; i ++) {   
        theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);   
      }
  }
  return theRequest;
}
// 例如网址是： https://www.baidu.com?name="blue"
var param = getParam();
console.log(param.name);  // blue